Development of Union OPAC at universities in Pakistan: An overview. International Research Journal of Arts, Humanities and Social Sciences, [S. l.], v. 4, n. 1, p. 269–280, 2026. DOI: 10.3456/cwkmbq13. Disponível em: https://irjahss.com/index.php/ir/article/view/337.. Acesso em: 5 apr. 2026.